Q.5. The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120V. Then its rms value of current will be (a) 101.3V (c) 70.7V (b) 84.8V (d) 56.5V geb
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- An electric power station that operates at 15 kV and uses a 20:1 step-up ideal transformer is producing 370 MW (Mega-Watt) of power that is to be sent to a big city which is located 240 km away with only 2.5% loss. Each of the two wires are made of copper (resistivity = 1.68×10−81.68×10−8 Ω.m). What is the diameter of the wires?A 60.0 W light bulb is plugged into a standard wall outlet that is a source of an AC voltage: by 8 = 170.0 sin (377t), where e is in volts and t is in seconds. The resistance of the bulb and the rms current in the bulb are: O a. 241 ohms, 0.500 O b. 12.0 ohms, 6.00 A O c. 80.0 ohms, 0.352 A O d. 482 ohms, 0.352 A O e. 2.83 ohms, 6.00 AA 1·21-MF Capacitor is connected to a North American electrical outlet. (Avrms = 120V, f = 60·0Hz). Assuming energy stored in the Capacitor is Zero at + = 0, determine the magnitude & the current in the wires at t = 192 Note 3 Answer must be in A. S the
- If the frequency is equal to 20 kHz than the alternating current completes: 2000 cycles in 0.1 s o 200 cycles in 0.IsO 20 cycles in 0.1s O 20000 cycles in 0.1 sA DC circuit consists of a 30.5 V battery connected in series to two components. The first component is a variable resistor set to 1.7 Ohms. The second component is a set of four fixed resistors connected in parallel. The first fixed resistor is 7.9 Ohms, the second fixed resistor is 6.5 Ohms, the third fixed resistor is 5.3 Ohms and the fourth fixed resistor is 7.9 Ohms. What is the total current supplied by the battery to the circuit? Use standard abbreviations for MKS units. Your Answer: Answer unitsThe graph shows variation in current, I ( dark line) and voltage, V (dashed green line) over time in an ac circuit. Which one is the correct phasor for the current and voltage? V 05 25 35 4.5 A В V I V I V I C more information is needed to answer this question A В